A Study on the readability of texts on large screens for the hearing impaired.
|
Accession number;00A0472619
|
| Title;A Study on the readability of texts on large screens for the hearing impaired. |
| Author;
NAKAYAMA TSUYOSHI
(National Rehabilitation Center for Disabled, Inst.)
TEJIMA NORIYUKI
(Ritsumeikan Univ., Fac. of Sci. and Eng.)
|
Journal Title;Japanese Journal of Ergonomics
|
Journal Code:S0258A
|
ISSN:0549-4974
|
|
VOL.36;NO.2;PAGE.81-89(2000)
|
| Figure&Table&Reference;FIG.5, TBL.6, REF.17 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;For people with hearing disabilities, a device was developed which can translate speeches into Japanese sentences with only a small delay. In order to lessen the fatigue of readers, the readability of texts on large screens was studied. The size of the screen was about 1200mm wide and 780mm high. The resolution of large screen display was SVGA (800*600 pixels). Six subjects read Japanese sentences from the screen, the variables being character-viewing angles and viewing distances. The average reading speeds and the margins of CFF before and after reading were measured. Also, the fatigue that the subjects felt and the readability of each sentence were surveyed by questionnaires. As a result, the most readable character-viewing angle was estimated about 0.011rad. at 2m viewing distance. They were about 0.008rad. and 0.0065rad. at 4m and 8m viewing distance, respectively. That is, the most readable character-viewing angle decreases gradually as the viewing distance increases. However, other factors, such as the pixel-matrix size of a character, the number of characters per line and the number of lines per page were different on each experiment. And so, there is a possibility that they might influence the results to some extent. (author abst.) |
|
|
|
Related Articles;
|
|
|
